types of validity Flashcards
What does validity mean?
Extent to which a test measures what it is supposed to measure
What are the two broad categories of validity?
- Internal validity
- External validity
What does mundane realism refer to?
How a study mirrors the real world
What are two types of external validity?
Population validity
Temporal validity
Ecological validity
What is a type of internal validity?
Concurrent
What is internal validity?
controls inside the study to reduce demand characteristics
How do you obtain high internal validity?
Design the research carefully
Control extraneous variable
Testing what you intended to test
What is external validity?
Affected by internal validity
- The ability to generalise the results of a study to different places or people
What is ecological validity?
Ability to generalise the results of a study to different place or setting
What is population validity?
Ability to generalise results of a study to different people or population
What is face validity?
Whether a test measures what is supposed to measure
How do you assess validity?
Using concurrent validity
What is concurrent validity?
How closely matched the results are to another well established test (Must exceed +0.8)
How do you improve the validity of experimental research?
Control group (test whether changes are dependent on IV)
Standardise procedure (reduces participants reactivity and investigator effect)
Use single or double blind research
What are bad about behavioural categories and the validity of questionnaires?
Too broad, overlapping or ambiguous
